21550978

素因数分解:

$2^1\times {\mathrm{19}}^3\times {\mathrm{1571}}^1$

素因数の和:1630

約数の個数: 16

約数和(自身を含む): 34143840

約数和(自身を除く): 12592862

約数列:

[1, 2, 19, 38, 361, 722, 1571, 3142, 6859, 13718, 29849, 59698, 567131, 1134262, 10775489, 21550978]

約数ペア:

[(1, 21550978), (2, 10775489), (19, 1134262), (38, 567131), (361, 59698), (722, 29849), (1571, 13718), (3142, 6859)]